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Physical Sciences and Mathematics Commons™
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Articles 1 - 7 of 7
Full-Text Articles in Physical Sciences and Mathematics
Patterns In Greater Sage-Grouse Population Dynamics Correspond With Public Grazing Records At Broad Scales, Adrian P. Monroe, Cameron L. Aldridge, Timothy J. Assal, Kari E. Veblen, David A. Pyke, Michael L. Casazza
Patterns In Greater Sage-Grouse Population Dynamics Correspond With Public Grazing Records At Broad Scales, Adrian P. Monroe, Cameron L. Aldridge, Timothy J. Assal, Kari E. Veblen, David A. Pyke, Michael L. Casazza
Wildland Resources Faculty Publications
Human land use, such as livestock grazing, can have profound yet varied effects on wildlife interacting within common ecosystems, yet our understanding of land-use effects is often generalized from short-term, local studies that may not correspond with trends at broader scales. Here we used public land records to characterize livestock grazing across Wyoming, USA, and we used Greater Sage-grouse (Centrocercus urophasianus) as a model organism to evaluate responses to livestock management. With annual counts of male Sage-grouse from 743 leks (breeding display sites) during 2004-2014, we modeled population trends in response to grazing level (represented by a relative grazing index) …
Environmental Assessment Of Streams: Linking Land Use, Instream Stressors, And Biological Indices To Infer Likely Causes Of Ecological Impairment, Jacob J. Vander Laan
Environmental Assessment Of Streams: Linking Land Use, Instream Stressors, And Biological Indices To Infer Likely Causes Of Ecological Impairment, Jacob J. Vander Laan
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
To protect and restore stream biota, managers need to be able to both detect biological degradation and infer likely causes of impairment. Managers commonly develop indices based on stream biota to assess the biological condition of streams. However, the performance of these indices dictates the ability to detect degradation, and although index performance varies widely, the sources of this variation are often unclear. In addition, bioassessments do not identify causes of impairment. My thesis research had two general goals: 1) develop indices to measure biological condition in Nevada streams and 2) quantify relationships between land uses, stressors, and biological condition …
Regional And Climatic Controls On Seasonal Dust Deposition In The Southwestern Us, Marith Reheis, Frank Urban
Regional And Climatic Controls On Seasonal Dust Deposition In The Southwestern Us, Marith Reheis, Frank Urban
Canyonlands Research Bibliography
Vertical dust deposition rates (dust flux) are a complex response to the interaction of seasonal precipitation, wind, changes in plant cover and land use, dust source type, and local vs. distant dust emission in the southwestern U.S. Seasonal dust flux in the Mojave-southern Great Basin (MSGB) deserts, measured from 1999 to 2008, is similar in summer-fall and winter-spring, and antecedent precipitation tends to suppress dust flux in winter-spring. In contrast, dust flux in the eastern Colorado Plateau (ECP) region is much larger in summer-fall than in winter-spring, and twice as large as in the MSGB. ECP dust is related to …
Discriminating Between Biological And Hydrological Controls Of Hyporheic Denitrification Across A Land Use Gradient In Nine Western Wyoming Streams, Andrew Kenneth Myers
Discriminating Between Biological And Hydrological Controls Of Hyporheic Denitrification Across A Land Use Gradient In Nine Western Wyoming Streams, Andrew Kenneth Myers
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
I studied nine streams near Grand Teton National Park, Wyoming, covering a land use gradient (urban, agricultural, and forested) to assess influences of land use on denitrification rates and hyporheic exchange. I hypothesized denitrification in the hyporheic zone is governed by availability of chemical substrates and hydrologic transport. I tested this hypothesis by coupling measurements of denitrification potentials in hyporheic sediments with a 2-storage zone solute transport model. Denitrification potentials were lowest on average in hyporheic sediments from forested streams and highest from agricultural streams. Modeling results suggest, on average, agricultural sites are transport-limited by having the slowest exchange rate …
Cache County, Utah Resource Assessment, Utah Association Of Conservation Districts, Utah Department Of Agriculture And Foods, Natural Resources Conservation Service
Cache County, Utah Resource Assessment, Utah Association Of Conservation Districts, Utah Department Of Agriculture And Foods, Natural Resources Conservation Service
All U.S. Government Documents (Utah Regional Depository)
This resource assessment is designed to gather and display information specific to Cache County, Utah. This report will highlight the natural and social resources present in the county, detail specific concerns, and be used to aid in resource planning and target conservation assistance needs. This document is dynamic and will be updated as additional information is available through a multi-agency partnership effort. The general observations and summaries are listed first, followed by the specific resource inventories.
Final Oil And Gas Leasing Environmental Impact Statement [Microform] : Grand Mesa, Uncompahgre And Gunnison National Forests V2, United States Forest Service
Final Oil And Gas Leasing Environmental Impact Statement [Microform] : Grand Mesa, Uncompahgre And Gunnison National Forests V2, United States Forest Service
Environmental Assessments (NV)
No abstract provided.
Land Use Inventory Of Salt Lake County, Utah From Color Infrared Aerial Photography 1982, Kevin P. Price, Reynold D. Willie, Douglas J. Wheeler, Merrill K. Ridd
Land Use Inventory Of Salt Lake County, Utah From Color Infrared Aerial Photography 1982, Kevin P. Price, Reynold D. Willie, Douglas J. Wheeler, Merrill K. Ridd
All U.S. Government Documents (Utah Regional Depository)
Salt lake County, Utah's major population center, continues to experience rapid urban growth. The Impacts of urbanization on land use patterns and natural resources in the county are of particular Interest to both state and local policy makers and planners. The effect of urban development on a dwindling agricultural land base and water resources must be assessed to allow a rational basis for future water allocation and land use planning .